Binding attachment for sewing-machines.



A. RONTKE. BINDING ATTACHMENT FOB SEWING MAQHINES. nrmonion rum) 1111.29, 1909.

2 SHEETS-SHEET 1.

WITNESSES:

[MENTOR ALBERT ROIVTKE Pat: Med Nov. 14, 1911.

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APPLICATION FILED APB-.29, 1909.

F811 nted Nov. 14; 1911.

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' INVENTOR 11. 51??- RONTKE ATTORNEY m rum-Am mwmm. n. c.

UNITED STATES PATENT OFFICE.

ALBERT RONTKE, 0F BRIDGEPORT, CONNECTICUT, ASSIGNOB T0 'IIHE SINGERMANU- FACTURING COMPANY, A CORPORATION OF NEW JI RISEY.

BINDING ATTACHMENT FOR SEWING-MACHINE Patent ed Nov. 14, 1911.

Serial No. 492,916.

To all whom it may concern:

Be it known that I, ALBERT RONTKE, a citizen of the United States,residing at Bridgeport, in the county of Fairfield and State ofConnecticut, have invented certain new and useful Improvements inBinding Attachments for Sewing-Machines, of which the following is aspecification, reference being had therein to the accompanying drawin s.

%his invention relates to binding attachments for sewing machines, andhas for its object to improve the device represented by United StatesPatent N 0. 882,480, issued March 17th, 1908, to A. Rontke, wherein thedelivery end of the binder-head, when positioned for binding thestraight edge of the material, is located a sufiicient distance from thevertical line of needle actuation to furnish the necessary length ofbinding for mitering the corner; and while such relationshipof thebinder-head and needleactuation is practical it is desirable, especiallywhen usin bias binding of delicate texture, that thedelivery end of thebinder-head occupy a position in close proximity to the vertical line ofneedle actuation, which is the objectattained by the present invention.Referring to the accompanying drawings, in the several figures of whichlike .parts are similarly designated, Figure 1 is a view in perspectiveof the improved mechanism, together with the cloth-Presser, and aportion of the cloth-Presser bar and the cloth or bed plate of the sewinmachine, the binderead being shown a 'usted to its normal or operativeposition relatively to the vertical line of needle actuation. Fi 2 is aview similar to Fig. 1, with the bin er-head shown adjusted away fromthe vertical line of needle actuation sufiiciently to furnish thenecessary length of binding for mitering the corner. -.Fig. 3 is a viewsimilar to Figs. 1 and 2, with the binder-headshown adjusted to theosition for forming the miter folds in the binding. Fig, 4 is a view inperspective of the throatlate. -Fig. 5 is an underside view of theinding attachment, showing the parts adjusted to the positions shown inFi 1. Fig. 6 is a detail view later to be re erred to.

7 the needle-bar, and 8 the needle carried by said bar.

The binder base-plat 9 is adjustably se cured upon the plate 3 fly ascrew 10 which passes t rough the sprir. g-washer 11, slot 12 foldingblades 13 and 14 and frame 15, and is threaded into the a ljustingbracket 16 mounted in a groove 17 i ormed in said frame, which latter ismounted to slide in the groove 15 formed in the baseplate 9, pins 18, 18secured in the plate 3 s :rving to guide said base-plate in itsadjustments. A stationary bracket 19 is secured, by screws 20, 20 andpins 21, 21, to the back late 3 and provided with a resistance membi r22. The se men- 'tal slide 23 is seated in a similarly s aped guide-way24 formed in the base-plate 9, and is provided with a plate 25 whichterminates at its inner end in a wedgeshaped portion 26; and secured tosaid slide and plate, by screws 27, 27, is the binder bracket 28carrying the binder-l ead 29.

30 represents a frictio a 5 ring secured by screws (not shown) to t 1ease-plate-9, said spring being constructec so that the surfaceoverlapping the segmem al slide 23 will bear upon said slide and am tohold it against accidental adjustment.

An adjusting lever 31 is pivoted by ascrew 32 to the plate 25 and islimited in 1ts movements by a pin 33 secure 1 in said plate, said pinentering an elongau (1 slot 34 formed in said lever. A cam brac ret 35is secured by suitable pins (not show i) to the underside of the arm 36of the 18V( r 31, which latter is also provided with a man pulatingbracket 37.

38 and 39 representrlugs, later to be referred to, formed on threspective folding blades 13 and 14.

The throat-plate 40 i: provided with the commonly-emplo ed ope 11ngs forthe needle and feed-dog an is seen red to the bed-plate 1 in the usualmanner. The portion 41 of the throat-plate is rais X1 or thickened sothat its upper surface co: ncides substantially with the median horizint-a1 plane of the binder-head.

42 represents a depression or clearance for the free end of the foldingblade 14 when said blade is adjusted to the position shown in Fig. 2.

43 and 44- represent the main or body portion of the material and thebinding, respectively.

In the operation of the device, supposing the parts to be adjusted totheir positions.-

for ap )lying the binding to the straight edge of the material, as shownin Fig. 1, and it is desired to miter the corner, as shown in Fig. 3,the operator-adjusts the plate 9 to the osition shown inFig. 2, thusmoving the hinder-head away from the needle a SUffiCi'eIlt distance tofurnish the necessary length ofbinding for mitering the corner, suchadjustment carrying the-screw 10 to a position in line with the-portion45 of the slot 12 formed in the back-plate 3, said plate being providedwith a countersunk port-ion 46 to accommodate the adjustment of thewasher 11; next, the folding blades 13 and 14 carried by the frame 15are adjusted as shown in Fig. 2, the free end of the blade 13being-located above and the free end' of the blade 14 being locateddirectly below the binding, after which the binder-head is adjusted tothe position shown in Fig. 3, orat right angles to the position shown inFi 2, thus causing the miter folds to be lai about the corner of thematerial, as in the construction represented United States Patent No.882,480 previou {referred to. After the parts and inding ave beenadjusted as shown in Fig. 3, the needle is caused to penetrate thematerial as shown in said figure, the presserfoot is raised, the foldingblades returned to their normal positions, and the baseplate 9 returnedto the position shown in Fig. 1, thus causing the material to beadjusted with its edge 47in line with the feed movements of the:feed-dog, or at right angles to its former position' In returnlngtheparts from the. positions shown in Fig, 3 to the positions shown in Fig.1 the o erator" first adjuststhe frame 15'to the OSltiOIlshown in thefigure last referredto, ollowed bymanipulating the bracket=37 whichcauses the free end 'ofithecambracket 35 to rotate in a line just insidethe resistance member 22, thus causing; the cam portion of said bracketto act a ainst saidresista-nce member. Thus it wi 1 be seen that themanipulation of the bracket 37- isthe only manual control necessafor-returning. the plate 9 and segmental s -"de 23"and part-s earriedbythe latterto their first-illustrated or normal positions. As theb'inderrhead'approaehes its limit. of. adjustment, the I wedge. shapedportion 26'enters between the In -38 and 39 and separates the free ends0 the fold-' the the .thezbaekiplate 3 by the screw 10 occupying theposition in slot 1.2 illustrated in the last mentionedfigure, and thatwhen the parts occupy the positions shown in Fig. 3 the base-plate 9 isheld against adjustment upon said back plate by the adjustment of saidscrew '10 to thecl-osed'end'of the slot 45.

Claims z'- 1. In a binding attachment for sewing machines for miteringthe folds of the binding about the corner of the fabric being. actedon,a throat-plate, a cloth-presserand a base=pliate carrying an adjustablymounted binder-head, the normal position of the latter beingsubstantially in a linewith the seam formation, said base-plate havingadjustments in a line corresponding substantially to the line ofseamformation to deliver throu h-the binder-head the necessary lengthofb-lnding for mitering the corner of said fabric,. and means foradjusting said binder-head into operative relationshipwith thetransversely arranged edge ofthe material next to be bound.-

2. In a miter-binder for sewing machines for mitering the folds of'thebinding about the corner of the fabric being acted on, a throatplate, aclothresser, a baseplate having adjustments in a line correspondingsubstantia 1y with the line of seam formation and carrying an adjustablebinder=head and folding blades, the latter coacting with SaidbinderheadTtO form miter folds in the binding at the point' ofintersection. ofthe transversely arranged edges of'the fabric being-bound.

3. In a binding attachment for. sewing machines, a throat-plate, aclothresser, an adjustably-mounted base-plate, a binderhead andfolding,blades'adjustab'ly mounted upon said baselate, in combinationwith a cam bracket an a resistance member for returnin said base-platetoits normal "position, su stantially as described.

4; In a binding attachment? for sewing machines, a throat-plate, acloth-presser and a baselate carrying an adjustably mounted bin er-head,the normal of the latter being substantially in hne with the seamformation, said base plate having adjustments in a line correspond"substantiallj to theline of seam formation to deliverthrou h thebinder-head the necessary length 0 bindinfor mitering, the corner ofsaid fabric, anl'rneans for adjusting ositi'on said binder-head intooperative relationship In testimony whereof, I have signed my with thetransversely arranged edge of the name to this specification in thepresence,

material next to be bound, in combination of two subscribing witnes es.

with means for locking said base-plate ALBE RT RONTKE. againstaccidental adjustment when said Witnesses:

folding blades are in operative relationship J. J. FINCH,

with said binder-head to fold the binding. ABBIE M. DONIHEE.

Copies of this patent may be obtained for five cents each, by addressingthe "00m: dssioner of Patents,

Washington, D. G.

